AP393SG-13 Equivalent & Substitute Parts

Part Overview

The AP393SG-13 is a dual-channel general purpose comparator manufactured by Diodes Incorporated in 8-SOP surface mount packaging. This device operates across a wide supply voltage range (2V to 36V single supply, ±1V to ±18V dual supply) and features open-collector output configuration suitable for logic-level interfacing. The part is ROHS3 compliant and currently in active production status with 20,100 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging or temperature ratings are required for specific applications, or when design requirements demand enhanced performance characteristics such as lower input offset voltage or improved quiescent current specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP393SG-13
Manufacturer	Diodes Incorporated
Category	Linear Comparator
Type	General Purpose
Number of Elements	2
Output Type	Open-Collector
Voltage Supply Range (Single/Dual)	2V ~ 36V / ±1V ~ ±18V
Input Offset Voltage (Max)	5mV @ 5V
Input Bias Current (Max)	0.25µA @ 5V
Output Current (Typ)	16mA
Quiescent Current (Max)	2.5mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the AP393SG-13 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Dual-channel general purpose comparator architecture
Open-collector output configuration
Supply voltage range: minimum 2V to 36V single supply capability
Input offset voltage: 5mV or lower at 5V operation
Input bias current: 0.25µA or lower at 5V operation
Output current capability: 16mA or greater
Quiescent current: 2.5mA or lower

Mechanical & Environmental Compatibility:

Surface mount 8-pin package (8-SOP, 8-SOIC, or 8-TSSOP variants acceptable)
ROHS3 compliance required
Operating temperature range must encompass or exceed 0°C to 70°C minimum

Acceptable Variations:

Package case dimensions may vary within standard 8-pin surface mount specifications
Operating temperature range may extend beyond the original specification
Quiescent current may be lower than the original specification
Input offset voltage may be lower than the original specification
Output current capability may exceed the original specification

Substitute parts that meet all electrical requirements but differ in package type (SOIC vs. TSSOP) or temperature rating remain functionally equivalent for the AP393SG-13 application.

Parameter Comparison

Part Number	Manufacturer	Supply Voltage	Input Offset (Max)	Input Bias (Max)	Output Current	Quiescent Current	Temp Range	Package	MSL
AP393SG-13	Diodes Inc.	2V~36V / ±1V~±18V	5mV @ 5V	0.25µA @ 5V	16mA	2.5mA	0°C ~ 70°C	8-SOIC (3.90mm)	3
BA10393F-E2	Rohm Semiconductor	2V~36V / ±1V~±18V	5mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 85°C	8-SOIC (4.40mm)	1
BA2903F-E2	Rohm Semiconductor	2V~36V / ±1V~±18V	7mV @ 5V	0.25µA @ 5V	16mA @ 5V	1mA	-40°C ~ 125°C	8-SOIC (4.40mm)	1
LM193DR	UMW	2V~32V / ±1V~±16V	5mV	250nA	16mA	1mA	-55°C ~ 125°C	8-SOIC (3.90mm)	1
LM193H	National Semiconductor	2V~36V / ±1V~±18V	5mV @ 30V	0.1µA @ 5V	16mA @ 5V	2.5mA	-55°C ~ 125°C	TO-99-8	Not specified
LM2903AVQDR	Texas Instruments	2V~36V / ±1V~±18V	2mV @ 32V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-SOIC (3.90mm)	1
LM2903AVQDRG4Q1	Texas Instruments	2V~36V / ±1V~±18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-SOIC (3.90mm)	1
LM2903AVQDRQ1	Texas Instruments	2V~36V / ±1V~±18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-SOIC (3.90mm)	1
LM2903AVQPWR	Texas Instruments	2V~36V / ±1V~±18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-TSSOP (4.40mm)	1
LM2903AVQPWRG4Q1	Texas Instruments	2V~36V / ±1V~±18V	2mV @ 5V	0.25µA @ 5V	20mA	2.5mA	-40°C ~ 125°C	8-TSSOP (4.40mm)	1

Engineering Selection Recommendations

All listed substitute parts maintain active production status and ROHS3 compliance, meeting the core regulatory requirements for the AP393SG-13 application.

Direct Pin-Compatible Substitutes (8-SOIC, 3.90mm width): LM193DR, LM2903AVQDR, LM2903AVQDRG4Q1, and LM2903AVQDRQ1 provide direct mechanical and electrical compatibility with identical package dimensions. These parts offer improved input offset voltage specifications (2mV vs. 5mV) and extended operating temperature ranges (-40°C to 125°C vs. 0°C to 70°C). The LM2903 series additionally provides 20mA output current capability compared to the 16mA specification of the AP393SG-13.

Package Variant Substitutes (8-SOIC, 4.40mm width): BA10393F-E2 and BA2903F-E2 from Rohm Semiconductor maintain electrical compatibility but feature wider package dimensions. These parts offer reduced quiescent current (1mA vs. 2.5mA) and improved moisture sensitivity ratings (MSL 1 vs. MSL 3). The BA2903F-E2 extends the operating temperature range to 125°C.

Alternative Package Format (8-TSSOP): LM2903AVQPWR and LM2903AVQPWRG4Q1 provide equivalent electrical performance in 8-TSSOP packaging. These options are suitable for applications requiring smaller board footprint or specific PCB layout constraints. Both maintain the extended temperature range and improved input offset voltage characteristics of the LM2903 series.

Through-Hole Alternative: LM193H in TO-99-8 metal can packaging serves applications requiring through-hole mounting. This part maintains the original supply voltage range and quiescent current specification while offering extended temperature operation (-55°C to 125°C).

Frequently Asked Questions (FAQ)

Q: Can I use LM2903AVQPWR (8-TSSOP) as a direct replacement for AP393SG-13 (8-SOIC)?

A: LM2903AVQPWR is electrically equivalent but requires PCB layout modification due to different package footprints. The 8-TSSOP package has different pin spacing and dimensions than the 8-SOIC package. Verify PCB footprint compatibility before substitution.

Q: What is the difference between BA10393F-E2 and BA2903F-E2?

A: Both are Rohm Semiconductor parts with identical electrical specifications. The primary difference is operating temperature range: BA10393F-E2 operates -40°C to 85°C, while BA2903F-E2 extends to -40°C to 125°C. Select based on application temperature requirements.

Q: Why do some substitute parts have lower input offset voltage (2mV vs. 5mV)?

A: Lower input offset voltage represents improved performance and tighter tolerance specifications. Parts with 2mV offset voltage (LM2903 series) provide enhanced precision for applications requiring more accurate threshold detection. This is a beneficial improvement over the original 5mV specification.

Q: Is LM193H suitable for high-volume surface mount production?

A: LM193H uses through-hole TO-99-8 packaging and is not recommended for surface mount production lines. Select surface mount alternatives (8-SOIC or 8-TSSOP variants) for automated assembly processes.

Q: What does MSL rating mean, and why does it matter?

A: MSL (Moisture Sensitivity Level) indicates how long a component can be exposed to moisture before soldering. MSL 1 (unlimited) parts like the LM2903 series offer greater handling flexibility than MSL 3 (168 hours) parts like the AP393SG-13. Lower MSL ratings reduce risk of moisture-induced failures during storage and assembly.

Q: Can I substitute AP393SG-13 with LM193DR in a -55°C to 125°C application?

A: LM193DR is electrically compatible and operates across the required temperature range. However, verify that the original AP393SG-13 design was validated only to 0°C to 70°C. Extended temperature operation may require design re-qualification depending on application criticality.

Q: Are the automotive-qualified variants (LM2903AVQDRG4Q1, LM2903AVQPWRG4Q1) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts (AEC-Q100) meet or exceed commercial-grade specifications and are fully compatible with non-automotive applications. These parts offer additional reliability assurance at no performance penalty.

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